Finite Element Analysis of Transmission Conductor Crimping and Pressure Creep Test Research
The stresses and strains on the wire surface of crimped joints of aluminium alloy power cable conductors with a commonly used nominal cross-section of 240 mm2 were simulated by the finite element method using ABAQUS software.Simulation results show that:in the splice tube and cable conductor gap of 1.0 mm～1.7 mm range,the residual stress on the surface of the crimped cable conductor in the crimped range was non-uniform distribution,to the middle section as the centre,about 20 mm from the centre of the residual stress is larger,the maximum value of about 50 MPa;20 mm～42 mm from the centre of the residual stress is smaller,the residual stress in the 5 mm range of the end of the connecting pipe becomes larger again.As the gap increases from 1.0 mm to 1.7 mm,the axial extension strain of the crimped wire decreases from 12.62％to 3.12％.The maximum stress obtained by simulation 50 MPa and the operating temperature of 90 ℃ for the creep experiment parameters,the same annealed state as the aluminium alloy stranded wire compression creep specimens according to the simulation of the strain of pre-compression after the compression creep experiment,the experimental results show that:the annealed wire by the crimp deformation,creep deformation amount decreases,the second stage of the creep rate is reduced,and the greater the amount of pre-compression deformation,the second stage of the creep rate is lower.
power cablefinite element simulationcrimpingresidual stresscreep rate
万方数据
维普
